Hi to everyone! I'm a student of engineering and I'm working on a project with this software. I've an issue: I must simulate a specific service of a health clinic in which 2 days per year the MRI machine requires maintenance for the overall day. Due to the fact that's a project for my university course, I'm working on a reduced period of 7 days and I'm trying to introduce maintenance of that machine at a specific day of the week. Honestly, I don't know how can I perform this operation. May you help me? Thanks a lot in advance!