hi patrike - In dev version 4.4.7 it seems the "add/change pools" option in the web interface is still missing for dstm and also for the newly added bminer. The option is present in the web interface for for ewbf.
I will review this implementation and make it available for more mining software. It will however not be for version 4.5 that is planned for today, but in one of the releases after that. Thanks for your feedback on this.