Hello, I have my 3cx server setup and functioning just fine with about 10ext all grandstream gxp2000, full working version of 3cx. I have the provisioning setup by manually adding mac and make of phone into the new extension, and it does seem to pull the phone into 3cx and show that its registered and provisioned. Making and taking calls works just fine, however I am trying to set the first "extra" button on the side of the phone to be shortcut to the park1 lline. This user has a phone in the front and back of the warehouse, and needs to be able to quickly throw a call on hold from one of the phones, and then pick it up quickly on the other phone. For some reason its not working through provisioning, and I was wondering if there was a good way to manually add that function to blf1 through the phone web gui? I tried typing sp0, sp1, etc... into the phone but doesnt seem to work correctly. Didnt know if there was another way, or abbreviation that the shared park 0,1,etc.. had in order to make those extra buttons on the phones work with them. I appreciate any help in advance, thanks.