i found a way but i more time consuming.

imagine you have a branch.


10-----20----30
..........|
..........|
..........100

in
edit stress annontations --> element annotation
in segment 10 to 20 write "node 20"

then in "create isometric drawing" edit the .pcf and you will see the node inside every TEE section

if you have tee, socklet and weldolet mixed, you can add as element annotation "tee", "socklet" or "weldolet".


i opened a case about it, their answer is that are asking to developers to solve this "problem".

example:
TEE
END-POINT 90.0000 -0.0000 0.0000 203.2000
END-POINT 110.0000 -0.0000 0.0000 203.2000
CENTRE-POINT 100.0000 -0.0000 0.0000
BRANCH1-POINT 100.0000 -0.0000 10.0000 50.8000
SKEY TEBW
MESSAGE-SQUARE
TEXT sockolet
UNDIMENSIONED

now you know it is a sockolet: you can now change by hand the section as above.