Can we append new filter content while pressing customized filter button but not replacing existing filter?

edit

Normally we will have multiple filter content such as:

wlan.bssid contains cc:05:74 && (wlan.fc.type_subtype == 0x0000 || wlan.fc.type_subtype == 0x0001 || wlan.fc.type_subtype == 0x0002 || wlan.fc.type_subtype == 0x000b || wlan.fc.type_subtype == 0x000c || wlan.fc.type_subtype == 0x000d)

I have added fillter button for each wlan.fc.type_subtype, but while I want to add a filter appending to current filter, the filter button will clear the content first and leave a single filter; that's really an inconvenient experience for me!

Pressing 'shift' + filter button also not doing append work.

Please consider improve this. Thanks.

Hangtian