The phrase "for voluntary use" is correct and usable in written English.
You can use it to describe activities or arrangements that are not mandatory, but are encouraged or suggested. For example, "This software is offered for voluntary use to help members of the community become more familiar with the new technology."
Christian Worship: A Service Book (1953), a semiofficial manual for voluntary use, exerted wide influence in restoring and stabilizing the typical pattern, with an emphasis on use of scriptural sentences throughout.
In his discussion, he stresses that this model is only usable for voluntary use of IT system, and that further factors should be included in his model, such as extrinsic motivation, user experiences with the system, and characteristics of the task to be supported by IT (e.g. complexity of a task).
We will define IT adoption as follows, based on the discussion in [ 13]: for voluntary used system, IT adoption is reflected in the usage of the IT system; for mandatory used systems, IT adoption is reflected in the overall user acceptance.
Muñoz-Furlong believes that the next step in the development of allergen labeling should be to create binding guidelines for what is currently the voluntary use of "precautionary labeling," which warns of the possibility that an allergen might be present as the result of shared production processes.
Prior program experiences among the partners and in the sites suggest that family planning education and a broad range of methods, provided in a manner appropriate to the local context and grounded in the community, will influence knowledge of family planning, desired timing of children, desire for additional children and ultimately, voluntary use of effective contraceptive methods.
Three main reasons explain the presence of lead in CAM medicines: involuntary contamination (e.g. soil where CAM plants grow), voluntary use of lead for therapeutic purposes and voluntary use of lead to increase the weight of medicines (the heavier the better).
Goodhue argues that user evaluation is a sufficient surrogate of TTF, and that it is appropriate for both mandatory and voluntary used IT system.
One only has to look back at Gov. Brown's 2014 request for voluntary 20% urban water use reductions to see that the approach doesn't work. .
Monterey-CalAm acted later, did not call for voluntary rationing of specific uses and did not prohibit specific actions.
CBI is a common term used for voluntary, not-for-profit health insurance schemes, organized at the level of the community [ 1, 2].
Under a drought warning, the city would call for voluntary conservation measures, restrict water use for Parks Department fountains and golf courses, ask the Sanitation Department to suspend street flushing activities and would call on the Metropolitan Transportation Authority to reduce its fleet-washing activities.
