Boosting & Multiboxing

Clarification please.
I understand multiboxing with 3rd party software is not allowed. i.e: Lidc
I also understanding playing with multiple clients is okay for banking purposes, enchanting, etc.
I read somewhere on this forum that playing with multiple clients, so long as one tabs between clients to activate spells: is not considered multiboxing by the accepted definition of this server.
This raises three questions, with a fourth unrelated question;
1. Can boost my alts using a L60 without use of 3rd party software? (as this means I wouldn't be multiboxing by definition of this server)
2. Could I switch clients to offer a heal from an alt purely for efficient farming?
3. Can I keep an alt on follow, for purposes of transferring excess items from farming?
4. Finally, could I use a L60 friend to boost my characters on my behalf via mob tapping?
I understand multiboxing with 3rd party software is not allowed. i.e: Lidc
I also understanding playing with multiple clients is okay for banking purposes, enchanting, etc.
I read somewhere on this forum that playing with multiple clients, so long as one tabs between clients to activate spells: is not considered multiboxing by the accepted definition of this server.
This raises three questions, with a fourth unrelated question;
1. Can boost my alts using a L60 without use of 3rd party software? (as this means I wouldn't be multiboxing by definition of this server)
2. Could I switch clients to offer a heal from an alt purely for efficient farming?
3. Can I keep an alt on follow, for purposes of transferring excess items from farming?
4. Finally, could I use a L60 friend to boost my characters on my behalf via mob tapping?