Capitalization
Use sentence case for all headings, labels, and content.
Sentence case
Sentence case means everything is lowercase except for the first word in a label, phrase, or sentence. Sentence case follows the natural patterns of written language, which makes text easier to scan and comprehend.
Use sentence case in most titles and headings. Only capitalize the first word of a sentence or title.
Applicant admission requirements
Title case
Title case may be used in certain situations including: proper nouns, brands, products, and service names.
A proper noun is the name of a particular person, place, organization, or thing.
eg. “Margaret”, “Calgary”, “Government of Alberta”, or “Community Initiatives Program”
If a title, label, or heading includes a colon or ampersand, capitalize the first word after it.
Submitting adjournment Pre-Court
Capital case
When displaying information pulled from legacy systems there may be information that must remain in capital case due to limitations with integration.
Use this style only where necessary by the legacy system, since capital case is less readable, less accessible, and has the perception of emphasis.
Example:
Display the following information in sentence case when possible for better readability.

References
Making a case for letter case - Medium
Why letter casing is important to consider during design decisions - Medium
Book time in drop in hours