World in Flames Impulse type

where is the option to select the type of impulse you have selected eg combined naval etc

The group I play with just use the dialogue area to notify, in writing, what a MajP is doing for an impulse. Also verbalize that as well.
I get the feeling that you would like to see some sort of counter, probably on the map, that players can select the impulse type. Easy enough to do and using global properties there can be several ‘counters’ placed around the various maps that will display the same selection.