Hi, I need to make a specific link for making calls via the Custom option in Caller. What variables, apart from [number], can I use in Caller-> Personal-> Custom calling? Here I need to use the userId variable which is available e.g. in Person profile or something that communicates this information.
Hi @Wojciech_Gilarski
Welcome to the community 
If I understood you rightly, you are looking for a way to add [userId] as a parameter apart from [number] ?
At the moment, you can only use [number] as described in Callto Syntax: Make VOIP calls from Pipedrive - Knowledge Base
However, you can also build a fully custom one as described in Building / Customising Click-to-call functionality