use a mapkey, add your own icon to the toolbar
!REGISTER PDMLINK SERVER
mapkey RS @MAPKEY_NAMERegister PDMLink Server;@MAPKEY_LABELREG SERVER;\
mapkey(continued) ~ Command `ProCmdUtilWebRegServ`;\
mapkey(continued) ~ Select `siteregistrydialog` `MenuBar1`1 `ServerMenuPane`;\
mapkey(continued) ~ Close `siteregistrydialog` `MenuBar1`;\
mapkey(continued) ~ Activate `siteregistrydialog` `ServerRegisterNewPshBtn`;\
mapkey(continued) ~ Input `registernewserverdlg` `NewServerNameIPanel` `Windchill`;\
mapkey(continued) ~ Update `registernewserverdlg` `NewServerNameIPanel` `Windchill`;\
mapkey(continued) ~ FocusOut `registernewserverdlg` `NewServerNameIPanel`;\
mapkey(continued) ~ Input `registernewserverdlg` `NewServerLocationIPanel` \
mapkey(continued) `https://<pdmlink_server_hostname>/Windchill`;\
mapkey(continued) ~ Update `registernewserverdlg` `NewServerLocationIPanel` \
mapkey(continued) `https://<pdmlink_server_hostname>/Windchill`;\
mapkey(continued) ~ FocusOut `registernewserverdlg` `NewServerLocationIPanel`;\
mapkey(continued) ~ Activate `registernewserverdlg` `NewServerCheckPshBtn`;