Ties in which a novice is joined by experts (5)
I believe the answer is:
laces
'ties' is the definition.
(lacing is a kind of tiing)
'a novice is joined by experts' is the wordplay.
'a novice' becomes 'L' (as in a learner driver with L-plates on their car).
'is joined by' says to put letters next to each other.
'experts' becomes 'aces' (ace is a kind of expert).
'l'+'aces'='LACES'
'in which' is the link.
(Other definitions for laces that I've seen before include "Shoe ties" , "Scale for shoe fasteners" , "Scale for boot fasteners" , "Shoestrings" , "Cords for tying shoes" .)