Parameter set.

I don't believe Parameter Import Options are supported in CircuitStudio even though there is this dialog.

so there is no option to import parameters other than supplier and supplier part number like Altium?

That is correct.

I'm still trying to work out the purpose of supplier links and end up having my own "PN" field with the manufacturers part number, you can then upload your bom to something like octopart and check stocks and prices there.

Supplier links can be added to schematic symbols or to components placed on a schematic. To add to a symbol in a library right click in the library editor and select Supplier Links. Click Add, enter a search term and it will pull back from whatever suppliers you have defined matching parts based on using the suppliers search API. Select one or more that match the part you are looking for and hit OK. This attaches the supplier link information to the library part.

Within the PCB editor when generating a bill of materials (BOM), the configuration dialog has a scrollable list (lower left), at the bottom you will find Solution 1 and several columns listed under it. These are the information from supplier links.

However absolutely nothing wrong with having your own supplier part number field and then just bulk uploading to check stock and price. In many ways it may be preferable because the supplier link APIs may change over time or not always be available (e.g. Mouser and constant anonymous daily limit reached error).

So the only thing supplier links do is to populate columns with part numbers for each supplier? I tend to do this manual with a PN column and then columns for the major distributors, the problem I guess with further functionality is that farnell owns CS so there is not an incentive to add functionality like that of octopart (or findchips if you want to throw away $49 a month on a barley functional system).

Farnell don't actually own CS, it is an Altium product and we are just exclusive distributors and primary providers of end user support. There is nothing special in the supplier links with regards to Farnell / Newark parts, other suppliers are available and all work the same way using an API provided by the distributor. Given that Altium own Octopart there is always the possibility this functionality may be included in the future.

I see, yes I see that I have many plugins installed for various suppliers, strangely RS never works but then I don't find it the mowst functional thing to use anyway and prefer to check real parts and stocks so it saves me no time and I make my own lists of suppler numbers. Maybe octopart will be integrated at some point then.

If you are not aware of this it may be useful.  These are probably described somewhere in the Altium documentation and if you look for them you can learn more.  But it helps to at least be aware of their existence.

There are a few special parameters that you can put in the schematic library that will link to the web or to a local file.  When you add these you can right click on the symbol on a schematic and pull up a data sheet or other web page through the references selection.

I'm sorry but what are you saying? is i use particular "key words" in the parameters CS will make their contents the subject of menu items?