Where is the other place I can find the "lock to bssid" besides the Join Network page? Thx

Where is the other place I can find the "lock to bssid" besides the Join Network page? Thx

Once there is a wifi client (STA) interface, click edit on it and there is a box to enter the BSSID. If you leave the box blank it will connect to any AP it finds with matching SSID.