[BLG]

I have just purchased omni plan and am trying to learn my way around it. There are a couple of things I cannot work out (probably just not setting it up right) I searched through the forums but can't work out for example

I have 3 employees, subcontractors, equipment and materials.
I have managed to set up a project with dependancies but when I assign the subcontractor to a task the correct cost comes up, but when I assign the other employees the cost lessens, not by the whole amount just $20.00 to each employee I assign, it is obviously supposed to add up the costs given that 4 staff will be there all day, do I change the percentage?

Also as soon as I assign another worker it adds another day, do I have to group these 4 workers?

When I add a material like the water feature for example it adds it to the gantt chart as time, but it is a material.

Sorry for all the questions but I can see this will end up a great programme for my business.
Any help would be appreciated.