The phrase "act individually" is correct and usable in written English.
It can be used when referring to the behavior or actions of individuals as separate entities rather than as a group.
Example: "In this project, each team member is encouraged to act individually to bring their unique perspectives to the table."
Alternatives: "operate independently" or "function separately".
People who might have banded together as plaintiffs in a class-action lawsuit – sharing the costs of fighting a large corporation or finding a lawyer willing to shoulder those costs in hopes of a share of a payout on behalf of thousands of plaintiffs, not just a single individual – must act individually in arbitration.
However, empirical evidence of the relationships between exposure and physiological effects is scarce, particularly for ruminants, reflecting the fact that levels of exposure to each individual chemical are generally very low and they do not act individually.
Although the mechanism is unknown, combined stress could promote enhanced effects over individual stress by exposing cells to multiple stimuli that can act individually or synergistically to promote an enhanced cellular response.
We must act individually, ationally and globally.
Thus, some genes act individually, some genes interact, and the environment has a further impact.
Even if the unions refrain from concerted action, there is always the possibility that disgruntled workers may act individually.
Unless you view "guilt" as a blanket, uniform classification that applies to all involved parties in every situation, you have to assess every act individually.
Several hurdles still have to be cleared before the new model could be put into practice, notably whether the fund managers would have to form a limited liability company for each fund-raising, or would act individually.
It made points that were barely qualified and later contradicted: that ants are better when they act individually (much like people are quicker at boarding a plane when they choose their own seats), but they are also better when they act as part of a collective (much like people are ultimately quicker at driving to a destination when they don't overtake or speed).
Widgery 3.95: "In the events which took place on 30 January the soldiers were entitled to regard themselves as acting individually and thus entitled to fire under the terms of Rule 13 without waiting for orders … the soldiers' training certainly required them to act individually in such circumstances and no breach of discipline was thereby involved".
In some cases, workers act individually to project themselves as superior to customers (Sherman 2007).
