Quoting, scheduling, certificates, supplier paperwork and compliance returns. In most firms this size it is handled by the operations manager, in the evening, because there is nobody else who knows how.
Drawings, specifications and bills of materials turned into a priced proposal in your format, ready to check.
Purchase orders, delivery notes and certificates read, matched and filed without anyone retyping them into a second system.
Inspections, incidents and audits captured once and reported everywhere they have to go.
If your operations manager is doing admin after hours because nobody else can, this is the one. We would still start by watching your team do it, because every business does this slightly differently and the difference is where the time goes.