OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13971 (Git)
Build type: Release
Branch: master
Hash: 8e4dd8ca8496595d4718dc24c872f7ed668b2521
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/Australia (en_AU)
A2plus V0.4.19
Basically I have created the assembly and manually positioned each part.
All this is a learning exercise, and I am now trying to use the various constraint tools but the icons are not active. I have tried selecting parts (as per a previous answer to a similar question) but no luck.
Cheers.