In my project I have 2 resources, I’ll call them A and B. Some task can only be performed by resource A, but other task can be done by either A or B, but never A and B together. 

I tried to solve this by assigning both A and B to the tasks that either of them can do and put them at 50%. This way 2 tasks can be performed concurrently. However if resource A is working on a task which only A can perform, B is also idle because A is 100% occupied. 

Is there a way to tell a task to use “Resource A” or “Recource B”? Or another work around?

To make my question more concrete. Resource A and B in my project are cranes that have to lift certain loads. Crane A is bigger than crane B, so some loads can only be lifted by crane A and some can be lifted by crane B or A, whichever happens te be available.

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​In my project I have 2 resources, I’ll call them A and B. Some task can only be performed by resource A, but other task can be done by either A or B, but never A and B together. I tried to solve this by assigning both A and B to the tasks that either of them can do and put them at 50%. This way 2 tasks can be performed concurrently. However if resource A is working on a task which only A can perform, B is also idle because A is 100% occupied. Is there a way to tell a task to use “Resource A” or “Recource B”? Or another work around? To make my question more concrete. Resource A and B in my project are cranes that have to lift certain loads. Crane A is bigger than crane B, so some loads can only be lifted by crane A and some can be lifted by crane B or A, whichever happens te be available.__PRESENT  Read More

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