need more help

[Menasor]

I am nearing completion of a concmap i have been working on but theres 2 things i need to do before its playable
1) how do you add concbags?
2)the lua script to make it blue team only with class limits of scout medic soldier and demoman only, (needless to say soldier and demo have quad)

to be more specific i have no clue at all about the lua files i dont know how to create them, script them or anything of the sort