According to point I/2 (only in Czech), the Ministry of Health prohibits:

for all health care providers, the presence of a third party during childbirth in a health care facility if the following conditions are not met:

• the birth will take place in a separate room or box with its own bathroom,
• It will be prevented from a contact of third-person with other mothers.
• the third party shall be subject to the same rules as the person visiting the patient in accordance with point 1.

The full wording of the measure can be found here (only in Czech).