[Orgmode] How to match items with tags and special todo keyword

[bar tomas]

Hi,
I like to create an agenda view of all items that have a specific tag
and also a specific TODO keyword.
I've tried with

C-c a M

but this retrieves all TODO items that are not DONE but I would like
to match only a specific TODO keyword (I've defined my own TODO
categories with +SEQ_TODO)

Many thanks for any help

Tomas Bar