Hi,
If you are running 16.1 or above, this is done very easily by manipulating the vids instead of the vlan names.
# config vlan 20,100,101,103,105-109,112,120,201,203,204,206,209,211,220-231,254,301 add ports 1:24 tag
Regarding your first question, already answered, you wrote:
configure vlan LAN-SERVERS add ports 1:4,1:5 untagged
enable sharing 1:4 grouping 1:4,1:5 algorithm address-based L2
please note that when you create a LAG with EXOS, you'll bind the port members into a LAG, and then you'll (mostly) use only that virtual port. No need to use the other ports. Exceptions are for ACLs and things like that.
So, the best way to do the same thing, is rather:
enable sharing 1:4 grouping 1:4,1:5 algorithm address-based L2
configure vlan LAN-SERVERS add ports 1:4 untagged
The end result is the same.