Is it possible to set "Update Automatically" interval to all feeds in selected Category (or Sub-category) at once ?
If not, is there any timeline for this feature in one of future releases?
That is not yet possible. Checkout preferences on Favorites. There you can define some defaults for any newly created favorite.
Will come in the future for sure.
Thanx in advance, Ben. Implementation of this feature into RSSowl will make my life more comfortable :-)