(Resolved) Change properties on a group of entities

I can change properties (colour and line thickness etc) on individual entities but I would like to be able to select a group of entities and change all of them together. Is there any method of doing this.

Yep sure, try selecting all the entities and then use Modify > Attributes.

Thank you arct for the reply. I was actually getting that far and nothing happened after selecting Attributes. However, as you indicated that this is the method, I persevered and found the answer. There is one more step. Need to select Continue action icon (like 2 right pointing triangles) at the bottom of the icons on the left.

Glad you got it sorted out, yes you have to follow the prompts and watch for the arrows in the sequence, or just hit the enter key!