In the above sheet on January 26th, 11:30am, the time 9:30am is in green. In the above sheet on January 26th, 11:30am, the time 9:30am is in green.

In the above sheet on January In the above sheet on January

I would keep this with the sentence below

26th, 11:30am, the time 9:30am is green.

26th, 119:30 am, the time 9 and 11:30am isare green. 26th, 9:30 am and 11:30am are green.

I don’t fully understand this sentence. See my changes.

Does it mean it ishas already been booked by other students already? Does it mean it has already been booked by other students?

Natural word order

Does it mean it isthe times are already booked by other students already? Does it mean it the times are already booked by other students?

If I book a lesson at that time (11:30am), how long should I choosewill the lesson durationbe? If I book a lesson at that time (11:30am), how long will the lesson be?

If I book a lesson at that time (11:30am), how long should I choose as the lesson duration? If I book a lesson at that time (11:30am), how long should I choose as the lesson duration?

I mean I only knowknow that you are only available at 11:30am on January 26th, but I don’t know the end time. I mean I know that you are only available at 11:30am on January 26th, but I don’t know the end time.

Word order

I mean, I only know you are available at 11:30am on January 26th, but I don’t know the enduntil what time. I mean, I only know you are available at 11:30am on January 26th, but I don’t know until what time.

For example, you may be available from 11:30am to 12 pm andbut you may also may be free from 11:30 to 12:30pm. For example, you may be available from 11:30am to 12 pm but you may also be free from 11:30 to 12:30pm.

That affects me when choosing the duration of athe class, so I must know the sheetyour availability clearly. That affects me when choosing the duration of the class, so I must know your availability clearly.

That affects memakes it difficult to choosinge the durationlength of a class, aso I must knowunderstand the sheet clearlybetter. That makes it difficult to choose the length of a class, as I must understand the sheet better.