The frequency of a maintenance plan corresponds to the interval between the different planned tasks. This can vary depending on the frequency you have selected.
You can choose between daily, weekly, monthly or yearly frequency.
If you choose a weekly frequency, you can select in the Frequency step if you want the occurrence to be repeated once a week (by selecting 1), once every two weeks (by selecting 2), etc.
If you choose a monthly frequency, you can select in the Frequency step if you want the occurrence to be repeated once a month (by selecting 1), once every two months (by selecting 2), etc.
Once you have chosen the frequency, you will have the possibility, depending on the selection made, to check the day of the week or the day of the month on which to repeat your maintenance plan (Monday, Tuesday, Wednesday, Thursday, etc., for a maintenance plan with weekly frequency; the 1st of the month, the 3rd, the 10th, the 15th, the 23rd of the month, etc. for a maintenance plan with monthly frequency).