Settling at the job in HMC

My friend got the letter of offer to HMC and the nursing grade 108. Does anyone know what benefits come with this grade, e.g., specifically what kind of accommodation, medical cover etc. should one expect? And what is the initial process? Specifically two questions here:
1. How long does it take on average between receiving the confirmation of a processed visa and actually travelling (i.e., air ticket is ready)?
2. How many days does it take on average to get the work permit and begin working after arrival, and does one get received from the airport and accommodated from day 1?

Please refer to the link hamad medical Qatar https://www.expat.com/forum/viewtopic.php?id=326856