1) At table 2) Belted in 3) Chair-bound 4) First word of A Lost Chord 5) Fixed firmly in place 6) Had room for 7) Had space for 8) Having a lap 9) Helped by an usher 10) In a beach chair 11) In a chair 12) Installed in office 13) Like fortunate subway riders 14) Like rider upon a steed 15) No longer standing Found on https://www.crosswordclues.com/clue/seated
adjective (of persons) having the torso erect and legs bent with the body supported on the buttocks; `the seated Madonna`; `the audience remained seated` Found on https://www.encyclo.co.uk/local/20974